four-time winner serena williams undefeated against her, and williams back in top form today, especially her serve. watch this. an ace right here. one of 13 for serena. later first set, serena with the serve, she'll return this one, pretty drop shot. she takes the net, takes the set 6-3. second set, pick up midrally, serena playing well on the baseline, up and right at petra. right there. back and then serena with the point makes it 5-5. match point, love the one. big serve. clocked at 116 miles per hour. serena, big smile. makes it look so easy onto the semis. >>> well, look who's at the all england club. it's ovi watching his gifford kirilenko. third set, long rally. >> go, cheryl. >> kirilenko with the smash. radwanska, she holds it off as well. it's so long we had to edit it. kirilenko ties it up at 3-3. next game, kirilenko serving far court, ace and a battle tied it at 4-4. suspended because of rain. >>> umbrellas out for this one. mardy fish and tsonga, fourth set. this is today. fish near court, blame it on the rain. he falls down. so tsonga the point and fish -- the ball boy to